Rotary swivel



June 24, 1930. J. H. SWAIN ET AL ROTARY SWIVEL Filed June 23, 1928 3 s R m 0 wmm W any I M C H l mented dune 2d, 1939 T l lQlil JOHN H. SXVAIN, ()1? LONG BEACH, AJTD HERBERT I-IASTIllG-S, OF AHAHEZIZE, CALIFORNIA ROTARY Application filed June 23,

This invention relates to an elevator hanger and hitch by means of which drill pipe, tubing, sucker rods, and so forth, are handled in a well.

An object of our invention is to eliminate the hook and elevator links which are usual and well-known in structures of this character heretofore in use.

Another object is to provide an elevator hanger and hitch which can not be uncoupled in event that the pipe or tl e like should become temporarily stuck in the hole. in run ing pipe, or the like, into the sole due t the constru one in the casing, or curvatures, or other impediments, he pipe will stop momentarily and the hook w'.L continue to descend, resulting in said hook dis evator links, and when the pipe 1' e u; will fall into the hole sulting in variou:--: serious dangers. An ad vantage of our construction is that this danger will be overcome. I

A further object of our invention is to eliminate the tangling of the swivel in the elevator linlzs by reason of the pipe, or the like, ringing one side in the derrick, and if the blocxs continue to descend the pipe will extend through the links and become ent gled therein.

A further advantage of our construction is to provide an elevator hanger and hitch which has great strength and is not so liable to break under strain.

In the drawing:

Fig. l is a fragmentary side elevation of our elevator hanger and hitch.

Fig. 2 is a fragmentary longitudinal tional view of the swivel bar.

Fig. 3 is a fragmentary side elevation of th swivel and suspending yoke.

i is a fragmentary side elevation of Referring more particularly to the drawing; the numeral 1 indicates a U-shaped bale which is pivotally secured to a collar 2, which collar is slidably mounted on a pin 8 rising from a head 4. The collar bears against a spring- 5 and a thrust-bearing 6 18 provided on the top of the pin 3 against which the spring bears so that the collar is SEVIVEL 1928. Serial No. 287,874.

A pair of arms 7, 8 extend outwardly from the head i and a pin 9 extends through the cad and the arms. A pair of elevator links t, l are each provided with eyes 12, 13 at h op and bottom thereof, respectively, and 5) extends through the upper eyes in thus securing the links to the head. r that the links 10, 11 snail be im a solid bar of metal with the formed in both ends thereof. An

som

gn 1e bottom thereof, and tire eyes 18 in said truunions l5, l5 projecting e elevator.

A swivel 16 of usual and well-known design has secured thereto yoke 17. The bottom of the yoke 17 is widened into a foot 18, which foot bears against cap screws 19, 19 in the swivel, the purpose of this construction being to prevent the tilting of the yoke. A heavy elongated pin 20 is screwed into the yoke 17 preferably with left-hand threaos, although any other suitable coupling. arrangement may be provided. A head 21 is formed on the top of the pin 20 and the elevator i l rests against the head 21, w as shown in Figure l.

lVhen the pipe is being raised or lowered in the well if the swivel. 1(3 and yoke would not rotate freely, the pin 20 would tend to rotate in the elevator. To prevent this, we provide a latch 22 which is pivotally mounted in the head 21 and :1V spring bears against a plate 24. which plate bears against the latch 22 to hold said latch in extended position so that it will bear against either of the links 10, 11 and thus preventrotation of the pin.

For certain operations it is necessary to prevent the rotation of the pin 3 in the collar 5 2, and during this time we provide a bar 25 which is slidably mounted on the bale 1 and when free rests between lugs 26 formed on top of the bearing 6 \Vhen it is desired, to permit swivelling of the collar, a hook 27 secured to a clamp 28 engages an eye 29 on the bar, thus holding, it up out of engagement with the lugs on the bearing.

Having described our invention, we claim: A rotary swivel adapted to be supported by an elevator comprising a yoke pivotally secured to the swivel, a pin therefor rising from the yoke, a head formed on the upper end of said pin against which the elevator is adapted to hear, a stop pin pivotally mounted in the head said stop pin engaging the yoke to prevent rotation of the swivel, a plate in the head adapted to press against said last named pin, and spring means urging said plate against the last named pin. In testimony whereof, we ailix our signatures.

HERBERT H. HASTINGS. J OHN H. SVAIN. 

